|
KMID : 0388720090160030167
|
|
Journal of Korean Society of Spine Surgery
2009 Volume.16 No. 3 p.167 ~ p.172
|
|
|
Cervical and Thoracic Sagittal Curves in Thoracic Adolescent Idiopathic Scoliosis
|
|
Kim Sung-Soo
Kim Jin-Hyok
Lim Dong-Ju
Jeong Chang-Won
Park Shin-Seung
Suk Se-Il
|
|
|
Abstract
|
|
|
Study Design Prospective study
Objectives: To analyze and compare the cervical and thoracic sagittal curves between normal adolescents and patients with thoracic adolescent idiopathic scoliosis (AIS).
Summary of the Literature Review There are no reports on cervical sagittal curves and its correlation with thoracic sagittal curves in AIS.
Materials and Methods : The sagittal curves were analyzed in normal adolescents (N-adol group, n=23) and patients with thoracic AIS (AIS group, n=26) who had thoracic curves ≥ 45°. Lateral standing radiographs of the cervical spine with a elbow straight and the whole spine with the hands on the clavicles were taken. The sagittal curves and balance were measured in the following segments; C2-C7, T2-T5, T5-12, T2-12, T12-S1. Cervical lordosis (C2-C7) was measured in both cervical spine radiographs and whole spine radiographs.
Results: In the N-adol group, the cervical lordosis was 9.2±14.6° in the cervical spine radiographs and -0.6±12.9° (’-’ means kyphosis) in whole spine radiographs. In the AIS group, cervical lordosis was -5.0±12.9° in the cervical radiographs and -8.1±12.7° in the whole radiographs. The AIS group had significantly less cervical lordosis than the N-adol group. Thoracic kyphosis of T5-12 and T2-12 was 24.1±10.6° and 38.9±13.1° in the N-adol group, respectively, and 17.8±9.4° and 30.1±11.8° in the AIS group, respectively. There was a significant difference between the two groups (Ps<0.05). There was no significant difference in thoracic kyphosis of T2-T5, lumbar lordosis and sagittal balance between the two groups (Ps>0.05). In the AIS group, the cervical lordosis measured in the cervical spine radiograph showed a positive correlation with thoracic kyphosis of T2-5 (r=0.50, P=0.009) and T2-12 (r=0.57, P=0.003).
Conclusions: AIS patients had significantly less cervical lordosis and thoracic kyphosis than normal adolescents. Decreased cervical lordosis in AIS had a significant correlation with their relative thoracic hypokyphosis.
|
|
|
KEYWORD
|
|
|
Adolescent idiopathic scoliosis, Sagittal curve, Cervical lordosis, Thoracic kyphosis
|
|
|
FullTexts / Linksout information
|
|
|
|
|
Listed journal information
|
|
  
|
|